IL94931A0 - Process for the preparation of polyimides - Google Patents

Process for the preparation of polyimides

Info

Publication number
IL94931A0
IL94931A0 IL94931A IL9493190A IL94931A0 IL 94931 A0 IL94931 A0 IL 94931A0 IL 94931 A IL94931 A IL 94931A IL 9493190 A IL9493190 A IL 9493190A IL 94931 A0 IL94931 A0 IL 94931A0
Authority
IL
Israel
Prior art keywords
polyimides
preparation
polymerisation accelerator
molecular weight
alkali metal
Prior art date
Application number
IL94931A
Other versions
IL94931A (en
Original Assignee
Chemiefaser Lenzing Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chemiefaser Lenzing Ag filed Critical Chemiefaser Lenzing Ag
Publication of IL94931A0 publication Critical patent/IL94931A0/en
Publication of IL94931A publication Critical patent/IL94931A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
    • C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
    • C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
    • C08G73/1003—Preparatory processes
    • C08G73/1035—Preparatory processes from tetracarboxylic acids or derivatives and diisocyanates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08—Processes
    • C08G18/16—Catalysts
    • C08G18/22—Catalysts containing metal compounds
    • C08G18/225—Catalysts containing metal compounds of alkali or alkaline earth metals
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30—Low-molecular-weight compounds
    • C08G18/34—Carboxylic acids; Esters thereof with monohydroxyl compounds
    • C08G18/343—Polycarboxylic acids having at least three carboxylic acid groups
    • C08G18/346—Polycarboxylic acids having at least three carboxylic acid groups having four carboxylic acid groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
  • Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

In order to prepare polyimides by heating a solution of intramolecular tetracarboxylic dianhydrides and organic diisocyanates in an aprotic organic solvent in the presence of a polymerisation accelerator, the polymerisation accelerator employed is a catalytic amount of an alkali metal hydroxide. <??>The process allows a simple preparation of polyimides of high molecular weight. The polyimides obtained have high heat resistance.
IL9493190A 1989-07-10 1990-06-29 Process for the preparation of polyimides IL94931A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT1665/89A AT392973B (en) 1989-07-10 1989-07-10 METHOD FOR PRODUCING POLYIMIDES AND IMIDES

Publications (2)

Publication Number Publication Date
IL94931A0 true IL94931A0 (en) 1991-04-15
IL94931A IL94931A (en) 1994-04-12

Family

ID=3518340

Family Applications (1)

Application Number Title Priority Date Filing Date
IL9493190A IL94931A (en) 1989-07-10 1990-06-29 Process for the preparation of polyimides

Country Status (11)

Country Link
US (1) US5132388A (en)
EP (1) EP0408539B1 (en)
JP (1) JP2854395B2 (en)
KR (1) KR910002929A (en)
AT (2) AT392973B (en)
BR (1) BR9003415A (en)
CA (1) CA2020738A1 (en)
DE (1) DE59003063D1 (en)
IE (1) IE62572B1 (en)
IL (1) IL94931A (en)
PT (1) PT94640A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2283242B (en) * 1993-10-28 1998-01-14 Kobe Steel Europ Ltd Polyimides
US6610242B1 (en) 2000-11-13 2003-08-26 Malcolm Swanson Method for treating polymeric fiber mats and for making filters from such treated fiber mats
US7291223B2 (en) * 2003-09-24 2007-11-06 Nitto Denko Corporation Epitaxial organic layered structure and method for making
JP6204102B2 (en) * 2013-07-26 2017-09-27 国立大学法人 東京大学 Soluble polyimide polymer having imino group and method for producing the same
CN104925782A (en) * 2015-06-17 2015-09-23 天津工业大学 One-step preparation method for synthesizing polyimide-based micro/nano fibers

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3701756A (en) * 1969-01-17 1972-10-31 Upjohn Co Catalytic preparation of polyimides from polyisocyanates
JPS4948196A (en) * 1972-08-14 1974-05-10
US3870677A (en) 1972-11-29 1975-03-11 Jr William J Farrissey Heat resistant reinforced composites of copolyimides
US3787367A (en) 1972-11-29 1974-01-22 Upjohn Co Soluble copolyimides
US4021412A (en) * 1974-11-07 1977-05-03 The Upjohn Company Alkali metal lactamate catalyst for the polymerization of diisocyanate with tetracarboxylic acid/dianhydride
US4001186A (en) * 1974-11-07 1977-01-04 The Upjohn Company Preparation of polyimide from organic diisocyanate with alkali metal salt of alcohol as catalyst
US4156065A (en) * 1977-01-21 1979-05-22 The Upjohn Company Catalytic condensation of isocyanates and carboxylic acids or anhydrides
US4177333A (en) * 1978-02-24 1979-12-04 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Catalysts for polyimide foams from aromatic isocyanates and aromatic dianhydrides
US4795795A (en) * 1985-02-20 1989-01-03 Mitsui Toatsu Chemicals, Incorporated Catalytic preparation of polyamide or polyamide-polymide with N,N'-dimethyl alkylene urea solvent
JP2674749B2 (en) * 1987-05-19 1997-11-12 株式会社クラレ Polyamide imide elastomer

Also Published As

Publication number Publication date
EP0408539B1 (en) 1993-10-13
IE902442A1 (en) 1991-06-19
ATA166589A (en) 1990-12-15
JP2854395B2 (en) 1999-02-03
BR9003415A (en) 1991-08-27
CA2020738A1 (en) 1991-01-11
IL94931A (en) 1994-04-12
US5132388A (en) 1992-07-21
PT94640A (en) 1991-03-20
IE62572B1 (en) 1995-02-08
JPH0352931A (en) 1991-03-07
AT392973B (en) 1991-07-25
DE59003063D1 (en) 1993-11-18
KR910002929A (en) 1991-02-26
ATE95821T1 (en) 1993-10-15
EP0408539A1 (en) 1991-01-16

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Legal Events

Date Code Title Description
KB Patent renewed
RH Patent void